Cattleya care - watering

[Clp29]

Hi Everyone,
My name is Carrie. My father has a bunch of Cattleya orchids. He is an older man and isn't sure why he is killing them. We are in NY. They are in a sunroom and get plenty of sun. One has a new shoot coming up but all of the leaves are wrinkled. He doesn't know if it is too much water or not enough. He said he waters them every 10 days or so. He puts them in a pan of water for 20-30 minutes and then puts them back on their humidity tray. He said if he just runs water over them then the bark doesn't feel wet. Any advice? Thank you